| Presentation | 2003/8/14 Optical Pulse Propagation in Adult Heads Based on the Finite Difference Time Domain (FDTD) Analysis and its Application to Optical Computer Tomography Takashi OTOMO, Takumi ISHIKAWA, Daisuke OMORI, Tadatoshi TANIFUJI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The finite difference time domain (FDTD) analysis has been successfully formulated for predicting time resolved reflectance of an optical pulse from scattering bodies with nonscattering (clear) regions. The nondiffusive light propagation across a clear region has been calculated based on the invariance of the light intensity along the ray in free space. The additional equivalent source functions generated by the nondiffusive light entering the scattering region have been introduced into the diffusion equations and the FDTD analysis has been formulated. Time resolved reflectance of the three-layered slab containing a clear layer was calculated based on the formulation. It has been become clear that received light intensity and mean time of flight estimated from the reflectance agree with previously reported experimental data quite well. It has also been found that the absorption loss of the scattering region beyond the clear layer is estimated from the time resolved reflectance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Diffusion equations / FDTD analysis / Optical tomography / Cerebrospinal fluid / Mean time |
| Paper # | OCS2003-51 |
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| Conference Information | |
| Committee | OCS |
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| Conference Date | 2003/8/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Optical Communication Systems (OCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical Pulse Propagation in Adult Heads Based on the Finite Difference Time Domain (FDTD) Analysis and its Application to Optical Computer Tomography |
| Sub Title (in English) | |
| Keyword(1) | Diffusion equations |
| Keyword(2) | FDTD analysis |
| Keyword(3) | Optical tomography |
| Keyword(4) | Cerebrospinal fluid |
| Keyword(5) | Mean time |
| 1st Author's Name | Takashi OTOMO |
| 1st Author's Affiliation | Department of Electrical and Electronics Engineering, Kitami Institute of Technology() |
| 2nd Author's Name | Takumi ISHIKAWA |
| 2nd Author's Affiliation | Department of Electrical and Electronics Engineering, Kitami Institute of Technology |
| 3rd Author's Name | Daisuke OMORI |
| 3rd Author's Affiliation | Department of Electrical and Electronics Engineering, Kitami Institute of Technology |
| 4th Author's Name | Tadatoshi TANIFUJI |
| 4th Author's Affiliation | Department of Electrical and Electronics Engineering, Kitami Institute of Technology |
| Date | 2003/8/14 |
| Paper # | OCS2003-51 |
| Volume (vol) | vol.103 |
| Number (no) | 255 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |